Ring, an Amazon subsidiary, has launched its first connected lock, which includes a special mechanism to prevent users from being locked out if the battery runs down. The device features a knob that can be turned several times to temporarily restore power, allowing users to unlock the door without needing a backup key or an external power source. This differs from Nuki's previous system, which was integrated into the door and continuously powered by the building. Ring's new lock is designed to be self-sufficient and replace traditional locks while remaining compatible with existing door systems. The Ring Smart Lock provides four ways to unlock the door: using a fingerprint, entering a code on a backlit touchscreen keyboard, through the Ring mobile application, or by voice command with Alexa. The application also allows users to check remotely whether the door is locked and to grant temporary access to others. Connectivity is handled through Amazon Sidewalk, a shared network that uses nearby Amazon devices to transmit status updates and synchronize access codes, reducing reliance on a home's Wi-Fi network. This system will also work with other Ring products such as doorbells, cameras, and alarm systems, with all events displayed in the Ring app. The Ring Smart Lock is expected to be available for purchase in the United States in early 2027, and it will come in three finishes: black, silver, and brass. Details about its availability in Europe have not been released, nor has it been confirmed whether the lock will support the Matter home automation standard, which allows different smart devices to work together. Installation is planned for doors equipped with a single-cylinder American lock, which may raise concerns about compatibility with European door designs.